中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

154 records (took 0.026 seconds)

    Increased discrete point processing in an OFDM communication system
    112.
    发明申请
    Increased discrete point processing in an OFDM communication system 有权
    在OFDM通信系统中增加离散点处理

    公开(公告)号：US20060115012A1

    公开(公告)日：2006-06-01

    申请号：US11291800

    申请日：2005-11-30

    Applicant: John Sadowsky ,  Alexander Maltsev ,  Vadim Sergeyev ,  Alexei Davydov

    Inventor： John Sadowsky ,  Alexander Maltsev ,  Vadim Sergeyev ,  Alexei Davydov

    IPC: H04K1/10

    CPC classification number: H04L27/2602 ,  H04L27/2607

    Abstract: Methods and apparatus provide increased symbol length with more subcarriers in a fixed-bandwidth system. The subcarriers spacing may be reduced to provide increased symbol length and enable higher throughput. In one implementation, a system compatible with the IEEE P802.11n proposal can use 128 subcarriers in 20 MHz operation to provide increased throughput in lower-bandwidth channel operation.

    Abstract translation: 方法和装置在固定带宽系统中提供具有更多子载波的增加的符号长度。 可以减小子载波间隔以提供增加的符号长度并实现更高的吞吐量。 在一个实现中，与IEEE P802.11n提议兼容的系统可以在20MHz操作中使用128个子载波来在较低带宽信道操作中提供增加的吞吐量。

    Method and adaptive bit interleaver for wideband systems using adaptive bit loading
    115.
    发明申请
    Method and adaptive bit interleaver for wideband systems using adaptive bit loading 有权
    使用自适应位加载的宽带系统的方法和自适应比特交织器

    公开(公告)号：US20050135493A1

    公开(公告)日：2005-06-23

    申请号：US10740170

    申请日：2003-12-18

    Applicant: Alexander Maltsev ,  Ali Sadri ,  Alexei Davydov

    Inventor： Alexander Maltsev ,  Ali Sadri ,  Alexei Davydov

    IPC: H04L1/00 ,  H04L27/26 ,  H04K1/10

    CPC classification number: H04L1/0071 ,  H04L1/0042 ,  H04L27/2608 ,  H04L27/2628

    Abstract: An adaptive interleaver for wideband orthogonal frequency division multiplexed (OFDM) communications permutes a variable number of coded bits per OFDM symbol (Ncbps). The variable number of coded bits is calculated based on individual subcarrier modulation assignments for orthogonal subcarriers of a wideband channel. The interleaver matrix size may be based on the variable number of coded bits per OFDM symbol and the number of subchannels that comprise the wideband channel. The interleaver may add padding bits to the interleaver matrix to fill any remaining positions, and after performing an interleaving operation, the interleaver may prune the padding bits to provide a sequence of interleaved bits for subsequent modulation on the orthogonal subcarriers. A receiver may include an adaptive deinterleaver to reverse the process.

    Abstract translation: 用于宽带正交频分复用（OFDM）通信的自适应交织器将每OFDM符号的可变数量的编码比特（Ncbps）置换。 基于宽带信道的正交子载波的各个子载波调制分配来计算编码比特的可变数目。 交织器矩阵大小可以基于每OFDM符号的可变数量的编码比特和构成宽带信道的子信道的数量。 交织器可以向交织器矩阵添加填充比特以填充任何剩余的位置，并且在执行交织操作之后，交织器可以修剪填充比特以提供交织的比特序列以用于正交子载波上的后续调制。 接收机可以包括自适应解交织器来反转该过程。

    UPLINK MULTI-USER MULTIPLE-INPUT-MULTIPLE-OUTPUT (MU-MIMO) CONFIGURATIONS
    117.
    发明公开
    UPLINK MULTI-USER MULTIPLE-INPUT-MULTIPLE-OUTPUT (MU-MIMO) CONFIGURATIONS 审中-公开

    公开(公告)号：US20230179269A1

    公开(公告)日：2023-06-08

    申请号：US17545688

    申请日：2021-12-08

    Applicant: Alexei Davydov ,  Bishwarup Mondal ,  Artyom Putilin ,  Victor Sergeev

    Inventor： Alexei Davydov ,  Bishwarup Mondal ,  Artyom Putilin ,  Victor Sergeev

    IPC: H04B7/0452 ,  H04B7/06 ,  H04B7/0456 ,  H04L5/00

    CPC classification number: H04B7/0452 ,  H04B7/0617 ,  H04B7/0626 ,  H04B7/0456 ,  H04L5/0048

    Abstract: An apparatus for a base station configured for operation in a C-RAN includes processing circuitry coupled to a memory. To configure the base station for multi-user multiple input multiple output (MU-MIMO) signal processing, the processing circuitry is to decode a plurality of sounding reference signals received from a corresponding plurality of UEs via a corresponding plurality of channels. The plurality of channels are estimated based on the plurality of sounding reference signals. A beamforming matrix is determined based on a channel matrix corresponding to the plurality of channels. Beamforming is performed on a plurality of uplink (UL) data streams received from the plurality of UEs, to generate a plurality of beamformed streams. The beamforming is based on the beamforming matrix. Interference suppression is performed on the plurality of beamformed streams to generate a plurality of output data streams. The interference suppression is based on non-orthogonal DMRSs received from the UEs.

    SOUNDING REFERENCE SIGNAL (SRS) TRANSMISSION WITH BANDWIDTH PART (BWP) SWITCHING
    118.
    发明申请
    SOUNDING REFERENCE SIGNAL (SRS) TRANSMISSION WITH BANDWIDTH PART (BWP) SWITCHING 有权

    公开(公告)号：US20210126816A1

    公开(公告)日：2021-04-29

    申请号：US17141139

    申请日：2021-01-04

    Applicant: Alexei Davydov ,  Guotong Wang

    Inventor： Alexei Davydov ,  Guotong Wang

    IPC: H04L25/02 ,  H04L5/00 ,  H04W80/02 ,  H04W72/04 ,  H04W76/27

    Abstract: An apparatus for use in a UE includes processing circuitry coupled to a memory. To configure the UE for 5G-NR communications, the processing circuitry is to decode higher layer signaling received from a base station, the higher layer signaling to configure a plurality of BWPs for UL and DL communication with the base station. A received DCI includes a field triggering SRS reporting. The field also indicates a subset of the plurality of BWPs for the SRS reporting. SRS is encoded for transmission to the base station using a first BWP of the subset of the plurality of BWPs indicated by the field to perform the SRS reporting. An UL communication comprising a PUSCH is encoded for transmission using a second BWP of the plurality of BWPs, the second BWP being non-overlapping with the subset of the plurality of BWPs.

Patent Agency Ranking